Doffer.



B. A. PETERSON.

DOPPER.

APPLICATION FILED DEO.18, 1911.

Patented June 30,1914.

3 SHEETS-SHEET 1.

Z0252 ewes B. A. PETERSON.

DOFFER.

APPLIUATION FILED DEO.1B, 1911 1,101,812, Patented June 30,191L

3 SHEETSSHEET 2.

B. A. PETERSON. DOFFER. APPQIQATION FILED DEO.1B, 1911.

1,101,812, .Patented June 30,1914,

3 SHEETS-SHEET 3.

AQW KM COLUMBIA PLANOQRAPH C0.,WASHINOTON, D. C.

unrrnn STATESPATENT orrion BURT A. PETERSON, 0F ROCKFORD, ILLINOIS, ASSIG-NOR T0 HOWARD D. COLMAN, LUTHER L. MILLER, AND HARRY A. SEVERSON, COPARTNERS DOING BUSINESS AS BARBER-COLMAN COMPANY, OF ROCKFORD, ILLINOIS.

DOFFER.

Application filed December 18, 1911.

To all whom it may concern:

Be it known that I, BURT A. PETERSON, a citizen of the United States, residing at Rockford, in the county of I'Vinnebago and State of Illinois, have invented certain new and useful Improvements in Doffers, of which the following is a specification.

This invention relates to bobbin-doffing and replenishing machines adapted to travel along the sides of spinning and other frames. The full bobbins are removed from the spindles on the spinning frame, and empty bobbins placed on the spindles by devices-which are vertically alined with the respective spindles. The spindles, however, are not always arranged in a straight row upon the spinning frame, and hence it is desirable to adjust the doffer devices tocorrespond with the varying location of the.

spindles.

One of the objects of this invention is to provide for such adjustment, another object being to accomplish the adjustment automatically in the travel of the doifer along the spinning frame.

In the accompanying drawings, Figure 1 is a fragmental front elevation of a doffer embodying the features of my invention. Fig. 2 is a horizontal sectional view, the doffer being sectioned in the plane of dotted line 2 2 of Fig. 1, but showing the doifer in operative relation to a spinning frame. Fig. 3 is a fragmental side view. Figs. 1 and are detail sectional views. Fig. 6 shows a locking device.

In Fig. 3, A indicates a transverse section or portion of a spinning frame, B being the so-called ladder rail, C the upper flange of the ladder rail forming the spindle rail, D the lower flange of the ladder rail, E a full bobbin, and F the spindle-bases.

The embodiment herein shown of my invention comprises a carriage 1 consisting of a frame to which is rigidly attached a bar 52 supporting any suitable number of grooved rollers 3. These rollers are adapted to run upon a channel-bar rail 1 (Fig. 3) fixed in any suitable manner to the spinning frame, the rail being herein shown as located adjacent to and in front of the spindle rail. The carriage 1 is thus suspended upon the rail 4, and is maintained in proper position by means such as a roller 5 mounted in any suitable manner upon a downwardly pro- Specification of Letters Patent.

Patented June 30, 1914. SerialNo. 666,384.

j ecting portion 1 of the carriage, said roller bearing against the flange D.

The framework that carries the operating mechanism and the receptacle for the dofi'ed bobbins may be of any preferred character. Herein, I have shown said frameworkas consisting of an upper section and a lower section, the former supporting the mechanism, and the latter the receptacle for doffed bobbins. Only the lower part of the upper section is represented in the drawings. The upper section includes two tubular columns 6 rigidly united at their lower ends by a bracket 7. The lower section comprises a bracket 8 to which are fixed bars 9 forming an open frame to receive a box or other receptacle (not shown) for the full bobbins. To the bracket 8 are fixed two columns 10 telescoping slidably within the coliunns 6.

lVhile I have herein shown the lower section as rigid I would have it understood that it may be of any preferred construction. In this instance, the lower section is provided with rollers 11 to run upon the floor, for convenience in moving the dofi'er fro-1n one spinning frame to another. The rollers 11 may be of any suitable type. If desired, the lower section may run upon the floor in the operation of the dolfer; or, if

preferred, said section may be supported off the'floor by any appropriate means. Here in I have shown a rock shaft 12 mounted in bearings 13 in the bracket 7, to the ends of which shaft are fixed a crank arm 11 and a hand lever 15 each connected by a link 16 to the bracket8. The lever 15 may be locked in adjusted position by means of a detent 17 engaging in notches in a sector 18. WVhen the carriage l is on the spinning frame, and

the detent 17 is in the notch 19, the lower section is off the floor. Fig. 1 represents .the doffer as removed from the spinning frame and standing on the floor, while Fig. 3- shows the dofi'er in operative relation to the spinning frame, with the lower section elevated. Y

The doffer may be propelled along the spinning frame, and the dofiing mechanism kept in time with the spindles, by any suitable means, as, for example, that disclosed in Patent No. 983,858, issued February 7, 1911.

20 denotes the propelling wheel, said wheel being toothed to engage the spindle bases F, the latter constituting a rack. The wheel 20 is mounted 011 the lower side of the portion 7 of the upper section.

The supporting framework consisting of the upper and lower sections hereinbefore described is supported in operative relation to the spinning frame by means of the carriage 1 and is connected to the carriage in such a manner as to permit of an adjustment of the doffer framework, in a horizontal plane, toward and away from the spinning frame. In the illustrative form shown in the drawings, the dotfer framework is connected to the carriage 1 by means of two parallel pairs of links 21 22. The links 21 are pivoted to the carriage l in any suitable way, as by means of a shaft 23. The links 22 are provided with pivots 2st on the carriage 1 (Fig. 5). The axes of the pivots 2A- and shaft 23 are parallel and are substantially parallel to the spinning frame, and lie in a horizontal plane. The links 21 and 22 are connected to the bracket 7 by suitable means, such as the shafts 25 and 12. The distance between the centers of the shafts 23 and 25 is the same as that between the center of the shaft 12 and the axes of the pivots 2%. Suitable means is provided for swinging the links 21 22 to move the doffer framework rearwardly, t'. 6., toward the spinning frame, such as coiled springs 26 connected to the links 21 and anchored to the carriage 1. The operative position of the doffer framework is determined by suitable stop means, such as a shoe 27 rigidly attached to the upper section of the doifer framework in position to contact the spindle base F engaged by the toothed wheel 20, the springs 26 holding the shoe 27 in contact with the spindle bases as the dofl'er progresses along the spinning frame. The ends of the shoe 27 are rounded to serve as cams in pushing the doffer framework forward when brought into contact with a spindle base which is forward of the spindle base just previously engaged. The shoe 27 is made long enough to contact the next succeeding spindle base before leaving the last preceding base. If the bottom wall of the notches between the teeth of the wheel 20 were depended upon as a stop, it will be seen that the rearward or forward adj usting movements of the dofler framework would continue throughout the travel of the doffer from one spindle to the next, and would interfere with the proper action of the dotting devices. The shoe 2? is provided in order that the adjusting movement shall take place quickly and at the proper time with relation to the position of the dotling devices.

ll hen the doffer is off the spinning frame, rearward movement of the doffer framework under the action of the springs 26 may be limited in a suitable way, as through contact of the portion 28 on the bracket 7 with the bar 2.

In operation, the dofl'er framework moves forward and back in a horizontal plane as required by the varying positions of the spindles, so as always to be in operative relation to the latter.

I claim as my invention:

1. In a portable doffer, a framework arranged to travel along the side of a spinning frame, means to cause the framework to travel, and means to adjust the position of a portion of the framework to accord with variations in the positions of the spindles on the frame.

2. The combination of a spinning frame, a doffer framework, means for supporting said framework on the spinning frame, means to cause the framework to travel along the spinning frame, and means controlled by the spindle bases on the spinning frame for adjusting the position of a por tion of said framework.

3. In a portable doffer, a frame comprising a plurality of sections, one adapted to be supported upon a spinning frame, and another section movable with relation to the section which is supported upon the spinning frame, and toward and away from the spinning frame.

t. In a portable doffer, a frame comprising a plurality of sections, one adapted to be supported upon a spinning frame, and another section movable with relation to the section which is supported upon the spin ning frame, and toward and away from the spinning frame, and means for moving the second mentioned section.

5. In a portable dolfer, a framework comprising a plurality of sections, one adapted to be supported upon a spinning frame and another section movable with relation to the first mentioned section, means on the second mentioned section adapted to contact a portion associated with spindles on the spinning frame for adjusting the position of the second section with relation to the first section, and means for maintaining such contact.

6. In a portable doffer, a framework comprising a plurality of sections, one adapted to be supported upon a spinning frame and another section movable with relation to the first mentioned section, a propelling wheel and a stop on the second mentioned section, and means tending to move the second section rearwardly with relation to the first section.

7. In a portable dofier, a carriage provided with supporting rollers, a dofier framework adjustably supported by said carriage, and means on the dofi er framework for causing the carriage to move on its supporting rollers.

8. In a portable dofi'er, a carriage provided with supporting rollers, a dofi'er framework supported by the carriage for horizontal movement forwardly and rearwardly, and means on the dofi'er framework for causing the carriage to move on its supporting rollers.

9. In a portable dofier, a carriage provided with supporting rollers, a dofler framework comprising an upper section and a lower section, means movably connecting said sections, means adjustably connecting the doffer framework to the carriage, and propelling means on the upper section.

10. In a portable do-ffer, a carriage having suspending rollers and a roller below the suspending rollers, a dofi'er framework extending through the carriage, said framework comprislng an upper section and a lower section connected together for relative vertical movement with relation to each other, parallel links connecting the upper section to the carriage for movement forward and back, means tending to move the upper section back, a propelling wheel on the upper section, and a positioning shoe adjacent to the wheel.

In testimony whereof I afiix my signature in the presence of twowitnesses.

BURT A. PETERSON.

Witnesses:

W. O. R. HELPER, LOUISE A. CULVER.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

